Studies directed toward the first total synthesis of acremodiol and acremonol
摘要:
Studies directed toward the synthesis of acremodiol and acremonol resulted in the synthesis of two macrodiolides 1, la, and 2 besides 3. The attempted synthesis of 1 and 2 confirmed that the absolute stereochemistry defined in the earlier report is incorrect. Compound I was synthesized by RCM-mediated macrocyclization. Attempted synthesis of 2 failed to give good yields in the cyclization, and la and 2 were synthesized by the Yamaguchi macrolactonization method. (C) 2009 Elsevier Ltd. All rights reserved.
Studies directed toward the first total synthesis of acremodiol and acremonol
摘要:
Studies directed toward the synthesis of acremodiol and acremonol resulted in the synthesis of two macrodiolides 1, la, and 2 besides 3. The attempted synthesis of 1 and 2 confirmed that the absolute stereochemistry defined in the earlier report is incorrect. Compound I was synthesized by RCM-mediated macrocyclization. Attempted synthesis of 2 failed to give good yields in the cyclization, and la and 2 were synthesized by the Yamaguchi macrolactonization method. (C) 2009 Elsevier Ltd. All rights reserved.
The first totalsynthesis of a 10-membered macrolide, stagonolide E is described from readily available 4-penten-1-ol. The synthetic strategy involves Jacobsen’s kinetic resolution, Sharpless epoxidation, Stille–Gennari, and Yamaguchi lactonization as key reactions.
Stereoselective Total Synthesis of (-)-(6R,11R,14R)-Colletallol via RCM Protocol
作者:Palakodety Krishna、D. Ramana、B. Reddy
DOI:10.1055/s-0029-1218270
日期:2009.11
The totalsynthesis of (-)-colletallol via a ring-closing metathesis protocol is reported. (-)-colletallol - ring-closing metathesis (RCM) - Grubbs II catalyst - Jacobsen’s hydrolytic kinetic resolution (HKR)
Studies directed toward the synthesis of acremodiol and acremonol resulted in the synthesis of two macrodiolides 1, la, and 2 besides 3. The attempted synthesis of 1 and 2 confirmed that the absolute stereochemistry defined in the earlier report is incorrect. Compound I was synthesized by RCM-mediated macrocyclization. Attempted synthesis of 2 failed to give good yields in the cyclization, and la and 2 were synthesized by the Yamaguchi macrolactonization method. (C) 2009 Elsevier Ltd. All rights reserved.